Witnesses to tsunamis report they make a roaring sound as they approach, similar to the sound of a freight train or a jet airplane. Tsunamis are triggered by underwater earthquakes, which are reported to make similar sounds. A hydrophone captured the sound of the 9.0 earthquake that struck Japan in 2011 and caused a tsunami across the Pacific Ocean, which was like the sound of a rocket taking off.Know More
The roaring sound made by an approaching tsunami is only one of several warning signs. Any earthquake in a tsunami zone should cause concern, as the speed of tsunami waves is high. Water often recedes from the shore as a tsunami approaches, exposing the floor of the ocean. When this occurs, the tsunami itself is likely to arrive within five minutes, so observers are advised not to go down to the ocean to see what is happening but to seek high ground immediately.
Other abnormal ocean activity and the approach of a wall of water are also cause for concern. An approaching tsunami often looks like a river or avalanche moving at high speed across the surface of the ocean. Sometimes it takes the form of a rapidly rising tide. Tsunamis typically arrive as a series of waves, so the departure of one wave doesn't mean the danger has passed.Learn more about Tsunamis
According to the Centers for Disease Control, the aftereffects for humans of a tsunami include lack of clean drinking water, loss of shelter and injury from remaining debris. Economically, areas affected by tsunamis struggle to amass funding to repair damaged structures. Those who survive tsunamis often suffer mentally and emotionally.Full Answer >
No known way to prevent a tsunami from occurring exists. Individuals can take steps to be prepared for a tsunami, and warning systems can help get people out of harm's way if an impending tsunami is predicted.Full Answer >
According to Eden, the first recorded tsunami occurred off the coast of Syria over 4,000 years ago. The Storegga Slides is a famous event that occurred in the prehistoric era that may have been caused by a tsunami.Full Answer >
Before a tsunami is imminent, people living in areas where tsunamis are possible should construct tsunami emergency kits and organize a family communications plan. When a tsunami watch is issued, people should tune into the National Oceanic and Atmospheric Administration's weather service, ensure the emergency kit is well stocked, locate family members and prepare to evacuate. When a tsunami warning is issued, everyone should evacuate to higher ground.Full Answer >